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Date: Sat, 19 Jan 2013 12:54:14 +0000 (UTC)
From: "Hudson (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Message-ID: <JIRA.12599358.1342648166072.163754.1358600054833@arcas>
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Subject: [jira] [Commented] (MAPREDUCE-4458) Warn if java.library.path is
 used for AM or Task
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-4458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13557981#comment-13557981 ] 

Hudson commented on MAPREDUCE-4458:
-----------------------------------

Integrated in Hadoop-Hdfs-trunk #1290 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1290/])
    MAPREDUCE-4458. Warn if java.library.path is used for AM or Task (Robert Parker via jeagles) (Revision 1435386)

     Result = FAILURE
jeagles : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1435386
Files : 
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/main/java/org/apache/hadoop/mapred/YARNRunner.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestYARNRunner.java

                
> Warn if java.library.path is used for AM or Task
> ------------------------------------------------
>
>                 Key: MAPREDUCE-4458
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4458
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: mrv2
>    Affects Versions: 0.23.3, 3.0.0, 2.0.2-alpha
>            Reporter: Robert Joseph Evans
>            Assignee: Robert Parker
>             Fix For: 3.0.0, 2.0.3-alpha, 0.23.7
>
>         Attachments: MAPREDUCE-4458-b23v1.patch, MAPREDUCE-4458v3.patch
>
>
> If java.library.path is used on the command line for launching an MRAppMaster or an MR Task, it could conflict with how standard Hadoop/HDFS JNI libraries and dependencies are found.  At a minimum the client should output a warning and ask the user to switch to LD_LIBRARY_PATH.  It would be nice to automatically do this for them but parsing the command line is scary so just a warning is probably good enough for now.

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